Air tempering unit



Jan. 31, 1939. J, vgl-ALGO M5623 AIR TEMPERING UNIT Filed Sept. 25, 19362 Sheets-Sheet l J. V FALCO AIR TEMPERING UNIT Filed sept. 25, i936 2'sheets-sheet 2 27 l,3,2 fag 31 ao @HM/vm;

Patented Jan. 31, 1939 UlTED STATES AIR TEMPERING UNIT John V. Falco,Everett, Mass. Application September 25, 1936, Serial No. 102,597

2 Claims.

ll'his invention relates to unit type heating and cooling apparatusesand, more particularly, to power driven units for diffusing heated orcooled air.

One of the primary objects of the present invention is to construct animproved Ventilating unit in which the air passing therethrough isdischarged throughout a radius of 360 degrees and thus secures evendistribution of large volurnes of treated air.

Another object of the invention is the provision of suicient contact ofthe air moving through the unit with the temperature regulating means toinsure sufficient heating or cooling to accomplish adequate changes intemperature in the room in which the unit is placed.

A still further object of the invention is to construct the unit with aminimum number of parts that are readily fabricated, rugged inconstruction and economical to operate.

lin the drawings:

Figure l is a front elevation partly broken away of a unit adapted to besuspended from the ceiling.

Figure 2 is a vertical section taken on line 2-2 of Figure 1.

Figure 3 is a front elevation also partly broken away of a modified formof the unit.

Figure l is a vertical section taken on line Li-Ll of Figure 3.

Figure 5 is a vertical cross section of a further modified form of unitwhich is adapted to be supported on the floor.

Referring to the form of unit illustrated in Figures l and 2, it will beseen that it consists of a pair of spaced apart circular front and rearplates i and 2 respectively which form a casing enclosing the blower andtemperature transfer elements.

The circular casing plates l and 2 are secured in fixed spaced relationthrough the medium of a plurality of tie rods 3 positioned around thecircumference of the casing. The rear casing sheet 2 is apertured toprovide a passageway for shaft i of motor 5, the latter being supportedon bracket t also affixed to the back casing sheet.

'I he front sheet of the casing has an opening i formed therein whoseaxis is concentric with relation to shaft d. An inwardly curved annularintake throat 8 is secured in the front opening and terminates adjacentthe outwardly flared ange 9 formed on the inner edge of disc lll affixedto the outer ends of radially extending fan blades Il. The blades il arepreferably oblique in contour and are integrally formed on circular backplate l2 which is provided with an integral hub i3 and aixed to motorshaft il. This type of fan construction draws in air axially throughopening 'i and discharges the tempered air at a considerable Velocitythroughout itsA en- 5 tire periphery so as to insure a uniformdistribution and diffusion of rapidly moving fluid throughout 360degrees.

The front and back casing sheets l and 2 are outwardly iiared near theircircumferences and in 10 the enlarged channels thus formed are securedcontinuous circular headers lll and iii. Also disposed in these enlargededge sections are a series of transverse tubes it in open communicationwith the headers lil and l5. When a suitable 15 heating or coolingmedium is introduced into the header lli through upper inlet connectionil, it circulates through the headers and connecting tubes it outwardlythrough connection i8. This arrangement insures a proper distribution ofthe 20 heating or cooling medium through all portions of the headers andtransfer tubes.

The series of spaced circular temperature transfer ns i9, supported onthe series of transfer tubes iii, are constructed of discs fabricated 25from copper, aluminum or other thermal conducting metal. Each disc isperforated with a series of flared openings 2i] through which the tubesi6 are inserted and soldered thereto. i

Thus air drawn in from the room is pumped 30 outwardly through theseries of parallel passages defined by the spaced discs i9 andconsequently an excellent thermal transfer is accomplished between theheated or cooled discs i9 and the air contacting the discs. Steam, hotwater, hot 35 air, chemical transfer liquids, refrigerants, cold wateror cooled air may be introduced into the inlet connection il anddischarged through the opening i8. As before stated, any of theseheating or cooling mediums is uniformly circulated 40 throughout theheaders and connecting tubes to transfer heat or cold to the discs i9 sothat all air passing through the unit is properly tempered.

The unit thus described is of a type particularly designed to besupported from the ceiling 45 of a room by means of arms 2l which arefastened to the front and rear of the casing by the tie rods 3.

The modified form of unit illustrated in Fig- 50 ures 3 and 4 is ofessentially the same construction as the unit previously described.However, in this form, the blower 25 driven by motor 26 is mounted in asquare casing and includes front and rear circular headers 29 and siijoined by 55 transfer tubes 3| carrying spaced circular ns 32 similar tothe unit just described.

This modified type of unit is used where it is desirable to have aportion or all of the tempered air directed into ducts or conduitsleading to sections of the room which would not be aiected by a unitdischarging throughout 366 degrees. In the modified unit, separator orbaille plates 33 are secured between the front and rear casing sheets 2land 28, the plates extending inwardly from each corner thereof toequi-spaced points on the periphery of the blower 25. 'Ihe plates 33bisect the space between the front and back sheets and are slightlywider at their outer ends where the casing is enlarged, the balies beingcut away at 34 to accommodate the transfer tubes 3| and discs 32.

It will be evident from this description that in operation an equalvolume of tempered air is discharged through each of the passages formedby spaced pairs of baille plates. With this construction, the unit maybe used to merely diiuse air through all four passages, or the passagesmay be connected to ducts while others are left open to diiuse air inthe immediate vicinity of the unit.

The second modication of the unit shown in Figure also makes use of aspaced annular header and circular disc construction shown in the othertwo forms. This type of unit, however, is adapted to be positioned onthe oor of a room and, consequently, the air is horizontally diiusedthrough the conditioning portion indicated by the numeral 35 by beingmounted in the upper portion of a tubular casing 36 secured on oorbrackets 37. A propeller type blower 38 comprising a motor and propellerblades is affixed to a bracket 39 fastened to the bottom plate 40 of thecasing 36. The curved inlet 4| directs the air forced by the blower 38upwardly through the casing where it comes in contact with thehorizontally positioned conditioning discs as indicated by the arrows.

'I'he conditioning unit 35 is secured in the upper end of the casing 36by means of the iianged section 42 and air is prevented from risingthrough the center of the discs by outwardly flared top plate 43. Thisform of unit discharges large volumes of tempered air throughout 360degrees in a plane parallel to the room flow.

What I claim is:-

1. An air tempering unit including a pair of spaced parallel circularheaders through which a apertured to provide an air intake for saidimpeller and baille plates aiiixed between the said cover sheets andextending obliquely from adjacent the said impeller to the corners ofsaid sheets.

2. An air tempering unit including a pair of spaced parallel circularheaders through which a heating or cooling medium is adapted tocirculate, a series of transverse conduits connecting said headersaround their circumferences, cover sheets attached to the outer sides ofsaid headers, and an air impeller mounted interiorly and centrally ofsaid cover sheets, the front cover sheet being apertured to provide anair intake for said impeller and bailie plates aiixed between the saidcover sheets and extending outwardly from adjacent the said impeller tothe edges of said sheets.

JOI-IN V. FALCO.

